Figure 2-16: Temperature Controller Card Calibration Points
3. Set voltmeter to read DC millivolts (mV).
4. Attach voltmeter with positive (+) lead on TP1 and negative (-) on either Pin 2 or 7.
Note
The voltage given above is for an ambient (machinery space) temperature of 77 °F
(25 °C). For each degree of ambient temperature above or below 77 °F (25 °C), add
or subract 0.242 mV from the nominal. Example: AT 87 °F (31 °C), the nominal
voltage of -322.3 mV should be increased (made less negative) by 10 x 0.242 or
2.42 mV, making the adjusted nominal -319.9 mV.
5. Adjust potentiometer M110-1 to read 322.3 millivolts nominal.
6. Remove voltmeter leads.
7. Remove jumper wire.
2.4.2
Set up Westinghouse Model 218A electronics
Before beginning operation, it is important to change the probe heater setpoint of the
existing electronics to support the Rosemount
™
Oxymitter DR probe. To convert the
Reference Manual
Install
00809-0100-4880
October 2019
Rosemount Oxymitter DR
43
Summary of Contents for Rosemount Oxymitter DR
Page 4: ...4 ...
Page 52: ...Startup and operate Reference Manual October 2019 00809 0100 4880 52 Emerson com Rosemount ...
Page 72: ...Troubleshoot Reference Manual October 2019 00809 0100 4880 72 Emerson com Rosemount ...
Page 74: ...Return material Reference Manual October 2019 00809 0100 4880 74 Emerson com Rosemount ...
Page 84: ...Replacement parts Reference Manual October 2019 00809 0100 4880 84 Emerson com Rosemount ...